package com.franklygames.main;

import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.image.BufferStrategy;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;

import javax.swing.JFrame;

import com.franklygames.gfx.Screen;
import com.franklygames.gfx.SpriteSheet;

public class Game extends Canvas implements Runnable{

	private static final long serialVersionUID = 1L;

	public static final int WIDTH = 160;
	public static final int Height = WIDTH/12*9;
	public static final int SCALE = 6;
	public static final String NAME = "Game";

	private JFrame frame;

	public boolean running = false;
	public int tickCount = 0;

	private BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);
	private int[] pixels = ((DataBufferInt) image.getRaster().getDataBuffer()).getData();

	private Screen screen;

	public Game(){
		setMinimumSize(new Dimension(WIDTH*SCALE, Height* SCALE));
		setMaximumSize(new Dimension(WIDTH*SCALE, Height* SCALE));
		setPreferredSize(new Dimension(WIDTH*SCALE, Height* SCALE));

		frame = new JFrame(NAME);

		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setLayout(new BorderLayout());

		frame.add(this, BorderLayout.CENTER);
		frame.pack();

		frame.setResizable(false);
		frame.setLocationRelativeTo(null);
		frame.setVisible(true);
	}

	public void init(){
		screen = new Screen(WIDTH,HEIGHT, new SpriteSheet("/sprite_sheet.png"));
	}

	public synchronized void start() {
		running = true;
		new Thread(this).start();

	}

	public synchronized void stop() {
		running = false;
	}

	public void run(){
		long lastTime = System.nanoTime();
		double nsPerTick = 1000000000D/60D;

		int ticks = 0;
		int frames = 0;

		long lastTimer = System.currentTimeMillis();
		double delta = 0;

		init();

		while(running){
			long now = System.nanoTime();
			delta +=(now - lastTime) / nsPerTick;
			lastTime = now;
			boolean shouldRender = true;

			while(delta >= 1){
				ticks++;
				tick();
				delta -= 1;
				shouldRender = true;
			}

			try {
				Thread.sleep(2);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
			if(shouldRender){
				frames++;
				render();
			}

			if(System.currentTimeMillis() - lastTimer >= 1000){
				lastTimer += 1000;
				System.out.println(frames + "," + ticks);
				frames = 0;
				ticks = 0;
			}
		}
	}

	public void tick(){
		tickCount++;

		for(int i = 0; i< pixels.length; i++){
			pixels[i] = i + tickCount;
		}

	}

	public void render(){
		BufferStrategy bs = getBufferStrategy();
		if(bs == null){
			createBufferStrategy(3);
			return;
		}

		//screen.render(pixels, 0, WIDTH);


		Graphics g = bs.getDrawGraphics();
		g.setColor(Color.BLACK);
		g.fillRect(0, 0, getWidth(), getHeight());
		g.drawImage(image, 0, 0, getWidth(), getHeight(), null);
		g.dispose();
		bs.show();

	}

	public static void main(String[] args){
		new Game().start();
	}


}